(Yes I'm sure I want to reply to a thread that has had no posts for at least 120 days)
So, let's recap on what we've seen in the past few months - relevant to the discussion that took place in this thread half a year ago. Since the early FPGA boards were already available then, but didn't convince the GPU crowd that the path CPU->GPU->FPGA->(s)ASIC was clear and inevitable, the new data would be:
Butterfly Labs - Single and Rig Box (FPGA, of which the former is apparently selling like hotcakes)
https://bitcointalk.org/index.php?topic=60586.0LargeCoin (sASIC, although not in customer hands yet)
https://bitcointalk.org/index.php?topic=67505.0... and of course the tantalizing (or worrying) prospect of someone throwing a lot of ASIC (?) power online without sharing
https://bitcointalk.org/index.php?topic=67634.0